Maintenance & Inspection - Johnstech

Maintenance 

& Inspection 

Guide 

Pad ROL 200 Series 

PRODUCTION TEST CONTACTORS 

Your Contact For Higher Performance

Pad ROL200 

Series 

About Johnstech 

Since 1992, Johnstech International Corporation, 

headquartered in Minneapolis, MN, has 

been a leading provider of interconnect solutions 

for semiconductor manufacturers who 

want higher first-pass yields and lower overall 

cost of test. Johnstech’s high performance 

Test Contactors are available in Pad, Leaded 

and Edge packages and are based on patented 

technology that provides superior electrical 

and mechanical performance. Johnstech also 

partners with Handler, Tester and Load Board 

manufacturers to ensure appropriate interfaces. 

With offices in the United States and 

Singapore; Field Service offices in California, 

Singapore, Philippines; and representation in 

China, Israel, Japan, Korea, Southeast Asia 

(Malaysia, Philippines, Singapore, Thailand) 

and Taiwan, Johnstech is proud to provide 

worldwide service and support. 

(Please refer to the back cover for addresses 

and phone numbers or go to our website at 

www.johnstech.com.) 

www.johnstech.com 

©2010 Johnstech International Corporation 

All rights reserved. 

2

Table of Contents 

Standard Product Information . . . . . . . . . . . . . . . . . 4 

Contactor Component Information . . . . . . . . . . . . 5 

Contactor Identification Information ...........6 

Contactor Configuration Verification . . . . . . . . . . 7 

Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . 8 

Cleaning and Maintenance Frequency . . . . . . . . . 9 

Pre-Maintenance Troubleshooting. . . . . . . . .10-11 

Load Board & Contactor Inspection . . . . . . . . . . .12 

Load Board Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 

Contactor Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 

Housing, Elastomer & Contact Inspection . . . . .13 

Housing Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 

Elastomer Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 

Contact Inspection ................................... 13 

Oxide Buildup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 

Contactor Removal & Installation . . . . . . . . . . . . .14 

Contact & Elastomer Removal . . . . . . . . . . . . . . . .15 

Contactor Cleaning . . . . . . . . . . . . . . . . . . . . . . .16-18 

Light Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 

Thorough/Ultrasonic Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 18 

Elastomer Installation . . . . . . . . . . . . . . . . . . . . . . . .19 

Contact Installation . . . . . . . . . . . . . . . . . . . . . . . . . .20 

Installation Verification . . . . . . . . . . . . . . . . . . . . . . .21 

Grounding Information . . . . . . . . . . . . . . . . . . .22-25 

Grounding Solutions Information. . . . . . . . . . . . . . . . . . . . . 22 

Ground Insert Removal ............................... 23 

Ground Insert Installation (New RCI) . . . . . . . . . . . . . . . . . . 24 

Ground Insert Installation (Snap Fit RCI) ............... 25 

Pad ROL200 

Series 

For questions about anything contained in 

this Maintenance & Inspection Guide, 

contact your local Johnstech representative. 

If you are experiencing a technical problem 

or issue, fill out the online Tech Help Form at: 

www.johnstechhelp.com 

(All forms will be responded to within two business days.) 

OR contact the nearest Field Service Office. 

(Turn to the back cover for addresses/phone numbers.) 

3 

I 



All rights reserved.

Pad ROL200 

Series 

Gold-Plated Fine Tip Contact 

Matte Tin Configuration 

>0.5mm pitch 

(Contact # 138337-0001) 

Gold-Plated Fine Tip Contact 

Matte Tin Configuration 

0.4mm pitch 

(Contact # 138337-0002) 

Low-Force XL-2 Fine Tip Contact 

NiPdAu Configuration 

>0.5mm pitch 

(Contact # 160369-0001) 

Standard Product Information 

Electrical Specifications 

(Measured using Gold-Plated and Low-Force XL Contact 

Configurations, shown on left, for Matte Tin and NiPdAu packages.) 

Matte Tin NiPdAu 

Electrical Length: . . . . . . . . . . . . . 2.00 mm . . . . . . . . 2.07 mm 

Inductance — Self: . . . . . . . . . . . . . 0.42 nH . . . . . . . . 0.55 nH 

Mutual: . . . . . . . . . . . 0.24 nH . . . . . . . . . 0.24 nH 

Capacitance — Ground: . . . . . . . . . . 0.35 pF . . . . . . . . 0.35 pF 

Mutual: . . . . . . . . . . 0.13 pF . . . . . . . . . 0.12 pF 

S21 Insertion Loss (G-S-G): . . . . . . . . -1 dB@24 GHz . . . . -1 dB@18.5 GHz 

S11 Return Loss (G-S-G): . . . . . . . . . . -20 dB@4 GHz . . . -20 dB@5.8 GHz 

S41 Crosstalk (G-S-S-G): . . . . . . . . . . -20 dB@18 GHz . . -20 dB@29.5 GHz 

Average Contact DC Resistance: . . . . . 30 mΩ . . . . . . . . . . 20 mΩ 

Current Carrying Capability: . . . . . . . . 4 A . . . . . . . . . . . .2.8 A 

Current Leakage: . . . . . . . . . . . . . . . 0.50mm pitch 160369-0001 160995-0010 160995-0100 

Full Tip, 0.40mm pitch 161503-0001 161504-0010 161504-0100 

Spares Spares 

Elastomers Kit - 1 Kit - 5 

Inner/Front Elastomer (Gray) 138335-0001 138335-0005 

Outer/Back Elastomer (Yellow) 159628-0001 159628-0005 

Inner/Front Elastomer (Blue) 110232-0001 123127-0001 

Outer/Back Elastomer (Red) 119493-0001 119493-0005 

RCI Ground Insert Kit - 1 Kit - 5 

Blue retention Elastomer 152676-0001 152676-0005 

3X3 EI Insert - Kit of 10 

Green Retention Elastomer 145549-0010 Red Bias Elastomer 145548-0010 

4X4 EI Insert - Kit of 10 

Green Retention Elastomer 145551-0010 Red Bias Elastomer 145550-0010

Contactor Components 

Methodology (showing Gold-Plated Contact Configuration) 

Device Under Test 

Contact 

Inner/Front Elastomer 

Outer/Back Elastomer 

Pad ROL200 

Series 

Note: The Gray/Yellow 

elastomer and Gold-Plated 

Contact (138337) for 

matte tin packages are 

shown in the illustrations 

throughout this document. 

For the NiPdAu package 

configuration, refer to 

page 4 for the correct 

contact and elastomer 

configuration. 

Contactor Components 

Load Board 

Standard Parts 

Most Johnstech Contactors 

have four standard parts 

that comprise the Contactor 

assembly: 

· Housing 

· Contacts 

· Elastomers 

· Acrylic Mounting Plate 

· Alignment Plate* 

Double-Latch Vertically Compliant 

Manual Actuator (DL-VCMA)* 

A Manual Actuator is available 

for short-run testing 

and characterization and/or 

troubleshooting. 

Alignment Plate 

*A Single-Latch Vertically 

Compliant Manual Actuator 

(SL-VCMA) is also available 

for selected Housing sizes; 

pictured here: 

Housing 

Fully-Assembled Contactor 

Acrylic Mounting Plate 

5 




Pad ROL200 

Series 

Identification 

Each Johnstech Contactor 

will have as much information 

as space allows. The 

identification system is designed 

to provide you with 

the technical information 

you need to identify the 

Contactor and its Design 

Data Sheet (example shown 

on the facing page). 

Contactor Identification 

Sample Contactor, Load Board Side Up 

9. Device Body 1. Manufacturer 6. Assembly 7. Device 8. Device 

Size (mm) Type Count Type 

5. Design Number 

10. Pitch (mm) 

3. Manufacturing 

Date Code 

Here is how to read the 

different data fields on the 

Contactors: 

1. JTI- identifies Johnstech 

International as 

the manufacturer 

2. Serial Number 

3. Manufacturing Date 

Code (see tables at right) 

4. Perimeter Contact Width 

(in inches) 

5. Design Number 

For Custom Orders: 

1234-YYZZ 

YY = Contactor Technology 

Code (i.e. 01 = 

ROL100; 02 = 

ROL200) 

ZZ = Configuration 

(or design iteration) 

Number 

For SelecTest Orders: 

6XXX-8XXXXX 

6XXX = Design Number 

8XXXXX = Configuration 

Number 

6. Assembly Type 

TS: Test Socket 

MA: Manual Actuator 

SL: Single-Latch MA 

DL: Double-Latch MA 

7. Device Perimeter Pad 

Count 

8. Device Type 

9. Device Body Size (mm) 

10. Device Pad Pitch (mm) 

11. Part Number (will appear 

only if Contactor is 

a SelecTest® order) 

Date Code Reference 

Week 

Week 

Letter Number Letter Number 

A 1 AA 27 

B 2 AB 28 

C 3 AC 29 

D 4 AD 30 

E 5 AE 31 

F 6 AF 32 

G 7 AG 33 

H 8 AH 34 

I 9 AI 35 

J 10 AJ 36 

K 11 AK 37 

L 12 AL 38 

M 13 AM 39 

N 14 AN 40 

O 15 AO 41 

P 16 AP 42 

Q 17 AQ 43 

R 18 AR 44 

S 19 AS 45 

T 20 AT 46 

U 21 AU 47 

V 22 AV 48 

W 23 AW 49 

X 24 AX 50 

Y 25 AY 51 

Z 26 AZ 52 

11. Part Number 

2. Serial Number 

4. Perimeter 

Contact Width 

Letter 

Year 

A 1991 

B 1992 

C 1993 

D 1994 

E 1995 

F 1996 

G 1997 

H 1998 

I 1999 

J 2000 

K 2001 

L 2002 

M 2003 

N 2004 

O 2005 

P 2006 

Q 2007 

R 2008 

S 2009 

T 2010 

U 2011 

V 2012 




6 

Date Code Examples: 

SN123456BK B = Week 2 K = 2001 

SN654321AAN AA = Week 27 N = 2004

Contactor Configuration Verification 

Verify the Alignment Plate 

Alignment Plate Part Number 

only. Check this number against 

the Part Number on the Design 

Data Sheet to ensure it is the 

correct one. 

Example of Design Data Sheet 

Alignment Plate for same Housing, 

but with a different-sized 

opening; and that opening size 

information. 

Pad ROL200 

Series 

Design Data Sheet 

The Design Data Sheet contains 

Contactor Specifications 

on Load Board layout, 

Handler plunge depth, Alignment 

Plate opening size and 

other information necessary 

for setup and troubleshooting. 

Refer to it to verify you 

are using the correct: 

· Alignment Plate (for manual 

vs. automated testing 

and opening-to-body) 

· Contacts (refer to part 

number and thickness) 

· Elastomer Configuration 

· Load Board Layout 

Alignment Plate 

Verification 

Refer to the Design Data 

Sheet to ensure the proper 

Alignment Plate is being 

used. Different package 

vendors and Handlers 

require different Alignment 

Plates. The Design Data 

Sheet will specify which 

one is right for which application, 

as well as any 

special engraving to assist 

with identification. 

7 




Pad ROL200 

Series 

Recommended Tools 

Screwdriver with Allen-Head Bits— for fastening the Contactor 

to the Load Board 

10X Eye Loupe— for magnified inspection of Contactor, 

Elastomers and Contacts 

Elastomer Tool— for use in Elastomer Installation as well as 

prying Alignment Plate from Contactor 

Fine-Tip Non-Metallic Tweezers— for handling Contacts 

and Elastomers 

Scalpel— for marking Elastomer lengths 

Micro Scissors— for cutting Elastomers to length 

Probe Tool— for use in Elastomer Installation 

Recommended Tools 

(in order at right) 

CAUTION: Avoid touching 

the Device- and Load 

Board-interface surfaces 

of the Contacts with 

metal tools. Scratches 

on these areas may 

degrade performance. 

Fiberglass Brush and Replacement Tips— recommended 

for cleaning the Contacts (If fiberglass brushes are not allowed 

on the test floor, although not optimum, nylon brushes 

can be substituted.) 

EXTRAS: 

Finger Cots— recommended to prevent contaminating Contactor 

components with skin oils 

Protective Eye wear— recommended to protect technicians 

from Test Floor/Contactor components, Compressed Air and 

Johnstech’s Maintenance & Inspection Kit 




8 

Johnstech’s Maintenance & Inspection Kit contains many of 

the tools needed for maintenance and inspection and are designed 

especially for Johnstech high performance Contactors. 

Contact your Johnstech representative for more information. 

Maintenance Kit Part Numbers— 

with torque screwdriver: 706449 

without torque screwdriver: 706448

Cleaning & Maintenance Frequency 

Determining Frequency 

Due to a wide range of variables (like those listed below), 

each Test Floor must determine their optimal cleaning and 

maintenance intervals through effective use of statistical 

process control. By carefully monitoring and recording yield 

rates and following good test floor troubleshooting procedures, 

you will be able to clearly differentiate between interface 

vs. maintenance problems and an effective maintenance 

cleaning cycle can be established to match the needs of each 

Test Floor. Contact your Johnstech representative or Field 

Service for further information or help. 

Pad ROL200 

Series 

Handler Design and Setup 

Handlers have a variety of test plane configurations, device 

transportation methods, plunge mechanisms and accessories. 

Each Handler has its own unique attributes. Handler set-ups 

that are not optimized can increase the required maintenance 

frequency by contributing to premature Contactor and Elastomer 

wear and Oxide Build-up on the Contacts. By working 

with Johnstech and your Handler supplier, you can optimize 

Handler performance to minimize downtime. 

Correct Contact Compressed Height 

Incorrect contact compressed height reduces the effectiveness 

of the Contact’s self-cleaning wipe and may cause increased 

oxide build-up and/or decreased contact life and load board 

pad life. It may also adversely affect Elastomer life by creating 

tears, cuts or Compression Set (permanent deformation). See 

examples on Page 13. The contact compressed height for each 

Contactor is specified on the Design Data Sheet> 

Package and Device Plating Variations 

Variations in packages can affect your maintenance schedule. 

Different package vendors, or even different device lots, may 

have varying amounts of Mold Flash that can increase wear on 

the Contactor and alter device placement. Also, the method 

used for plating the device can vary the rate of debris buildup, 

therefore varying the maintenance interval. 

Contaminants 

Accumulation of contaminants (such as Oxides and Mold Flash) 

will contribute to continuity failures during the test process. 

General Test Floor Maintenance Activities 

The frequency of Handler maintenance procedures also affects 

Contactor cleaning. For example, how often the Handler and 

handler test areas are blown free of debris impacts the effectiveness 

of the Contactor. Contactors exposed to increased 

levels of foreign debris are likely to require more frequent 

maintenance and cleaning. 

9 




Pad ROL200 

Series 

If experiencing problems 

in automated 

test, first answer these 

2 questions. 

1) Does the test socket 

work when manually 

testing with the 

Manual Actuator 

2) Do the Witness 

Marks from the Manual 

Actuator test look the 

same as those from the 

automated test 

If the answer to both 

questions is YES, then 

your test problem is 

probably caused by 

some variable other 

than your Johnstech 

Contactor. 

If the answer to either 

question is NO, then 

read through the checklists 

on these 2 pages, 

under the problem (in 

red) that you are experiencing. 

If this application has 

run well previously 

but is now failing, 

the troubleshooting 

must determine what 

has changed. If this 

is a new application 

troubleshooting must 

examine the original 

design. 

Pre-Maintenance Troubleshooting 

This Pre-Maintenance Troubleshooting section is to 

help you determine which part of your Johnstech 

Contactor may be inspected and/or serviced to address 

a particular Test problem. This section doesn’t 

cover Test Floor, Handler, Device or any other variables 

that may be contributing to your Test problem. 

If you still experience problems after following 

the Maintenance Instructions herein, contact 

your local Johnstech Representative or fill-out our 

online Tech Help Form at www.johnstechhelp.com. 

Experiencing Yield Fall-Off 

There are many reasons you may be experiencing Yield Fall- 

Off but it can frequently be attributed to either Parametric 

or Continuity Failures. 

Parametric Failures are typically due to increased Contact 

Resistance which can be caused by: 

· Dirty Contacts 

Inspect Contacts per instructions on Page 13. 

· Worn or Damaged Elastomers 

Inspect Elastomers per instructions on Page 13. 

· Device-Pad-to-Contact Alignment 

Inspect the Contactor Registration per instructions on Page 12. 

· Worn or Damaged Alignment Plate 

Inspect the Alignment Plate under Contactor Inspection 

instructions on Page 12. 

· Worn or Damaged Leadbacker/Nest 

Inspect the Leadbacker and Nest. 

· Oxidation/Contamination of the Load Board 

Inspect the Load Board per instructions on Page 12. 

· Excessive Load Board Pad Wear 


Continuity Failures are typically due to Open/Short Failures 

which can be caused by: 

· Excessive Loose Debris 

Inspect Contactor per instructions on Page 12. 

· Worn or Damaged Contacts 




· Worn or Damaged Alignment Plate 

Inspect the Alignment Plate under Contactor Inspection 




· Contamination of the Load Board 





10

Pre-Maintenance Troubleshooting 

Experiencing Device Damage or Jamming 

There can be many reasons why you experience Device 

Damage or Jamming. For example, incorrectly designed or 

incompatible, worn or damaged Handler/Contactor components 

may cause Pad Damage or Device Jamming. 

Device Pad Damage or Improper Wipe can happen when 

Contacts are out of alignment. Witness Marks will be offcenter 

on the device pads, which can occur due to: 

· Worn or Damaged Alignment Plate Opening 

Inspect the Alignment Plate under Contactor Inspection instructions 

on Page 12. 



· Changes in Package Singulation 

Verify that the Alignment Plate and Leadbacker are correct for the 

Device by comparing device dimensions to the Design Data Sheet 

(see Page 7). 

· Improper Overtravel Control 

Verify that Leadbacker/Nest has proper Overtravel control. Refer 

to the Contactor Specifications on your Design Data Sheet for 

Compressed, Uncompressed and Overtravel Stop measurements. 

· Worn or Damaged Housing Slots 

Inspect Housing per instructions on Page 13. 

Pad ROL200 

Series 

Device Pad Damage or Improper Wipe can also occur when 

devices experience over deflection, whereby large Witness 

Marks appear. This can be attributed to: 

· Worn or Damaged Contacts 




· Improper Elastomers or Elastomer Installation 

Verify that Elastomers are correct per your Design Data Sheet and 

make sure Installation was performed per instructions on Page 20. 




Verify that Leadbacker/Nest has proper Overtravel control. Refer 

to the Contactor Specifications on your Design Data Sheet for 

Compressed, Uncompressed and Overtravel Stop measurements. 

· Worn or Damaged Housing Tail Stop 

Inspect the Contactor per instructions on Page 12. 

Device Jams can occur due to: 

· Device-Pad-to-Contact Alignment 

Inspect the Contactor Registration per instructions on Page 12. 

· Worn or Damaged Alignment Plate Opening 

Inspect the Alignment Plate opening under Contactor Inspection 




· Changes in Package Singulation 

Verify that the Alignment Plate and Leadbacker are correct for the 

Device by comparing device dimensions to the Design Data Sheet. 


Verify that Leadbacker/Nest has proper overtravel control. Refer 

to the Contactor Specifications on your Design Data Sheet for Compressed, 

Uncompressed and Overtravel Stop measurements. 

11 




Pad ROL200 

Series 

Figure 1: Example of a Load 

Board Pad Pattern 

Load Board & Contactor Inspection 

Load Board Inspection 

Johnstech recommends performing a thorough inspection of 

the Load Board before initial installation of the Contactor, as 

well as when performing routine maintenance. First, however, 

verify your Load Board against the Load Board Drawing that 

was sent to you either with your Quote or Order. 

Next, check the Contact Land Pad Pattern for signs of wear 

on the Gold. See Figure 1. If Nickel is showing, make sure 

that it is not excessive. It is acceptable to utilize the Nickel 

surface during testing; however, in some RF applications, 

signal degradation will occur. Load Boards with wear that 

extends deeper than the Nickel surface, through to the Copper, 

can cause damage to the Contacts and Elastomers and should 

be replaced or repaired. 

NOTE: Excessive Load Board wear is typically caused by 

Contact deflection or excessive force on the socket Housing. 

Figure 2: Example of worn (vs. 

not worn on right) Alignment 

Plate Wall; needs to be replaced 

Contactor Inspection 

CAUTION: Use special care during the inspection process. 

Excessive force can fracture the Housing Slots. 

Figure 3: Example of backlit 

Alignment Plate Wear Test 

Figure 4: Examples of Tail 

Stop Wall Wear 

Before removing Contactor from the Load Board, use a minimum 

of 10X magnification to inspect it for: 

· Damaged, missing or excessively worn Contacts 

· Debris and Mold Flash trapped around Contacts 

· Cracks or chipping in the Housing or Alignment Plate 

· Cracked, deformed or missing Contact Slot Walls 

· Worn Alignment Plate (ALPL) Walls — see Figure 2. 

Complete ALPL analysis is a more complex topic than can be 

fully addressed here, but the following quick check-up may be 

helpful. 

NOTE: Remove Contactor from Load Board (per instructions 

on Pages 14) to test for Alignment Plate (ALPL) 

Wear. On a backlit surface, place device into the ALPL 

opening and then push it to one corner (see Figure 3). 

Use a Feeler Gauge Stock of 0.1mm, to check the gaps on 

the opposite sides. If Feeler Gauge Stock slips in and out 

of gap easily, the ALPL may need to be replaced. 

· Worn handler Alignment Pin Holes (contact your Johnstech 

representative for Bushings to reduce Contactor wear.) 

If any of the above conditions are observed, Contactor Maintenance 

and possibly Contact/Elastomer or ALPL replacement 

is required. 




12

Housing, Elastomer & Contact Inspection 

Housing Inspection 

In order to inspect the Housing, Elastomers and 

Contacts, the Contactor must be removed from Load 

Board and disassembled. Refer to instructions on 

Pages 14-15. 

Pad ROL200 Series Housings have a recommended lifespan 

of 2 million insertions. Take the dismounted/disassembled 

Contactor and using a minimum of 10X magnification, inspect 

the Housing for signs Tail Stop wear. If the Tail Stop depth 

exceeds 0.05mm (see Figure 4), replace Housing. Conversely, 

if the Contact Wipe on the Device Pad is not placed correctly 

(see Figure 5), check the Alignment Plate and Tail Stop Wall 

for wear. If observed, replace the Alignment Plate. 

Elastomer Inspection 

Using 10X+ magnification, inspect Elastomers for signs of: 

· Cuts or tears · Compression Set 

· Stretched sections 

Pad ROL200 Series Elastomers should last to 300,000 insertions, 

but there are many factors that affect Elastomer life. 

Upon inspection, if you see excessively cut or torn Elastomers 

(see Figure 6), or if the Compression Set exceeds 0.05mm (see 

Figure 7), replace Elastomers to regain optimum performance. 

Contact Inspection 

Using 10X+ magnification, inspect Contacts for signs of: 

· Worn Tips (See Figure 8) · Scratches or Markings 

· Oxide Buildup (See Figure 9) · Debris Buildup 

· Compressed/Distorted Shape 

Pad ROL200 Series Contact life depends on a number of variables. 

Refer to page 4. If any of the conditions listed above 

are observed, discard used Contacts and replace with new 

ones. Also, for optimum performance, if you know the Contacts 

have run their recommended lifespan, or you can see that wear 

exceeds 0.10mm, replace with new Contacts. 

Pad ROL200 

Series 

Figure 5: Acceptable Contact 

Wipe on Pad (Matte Tin) 

Figure 6: Example of Cut 

Elastomer; replace. 

Figure 7: Example of Compression 

Set; replace. 

Figure 8: New Low-Force XL 

Contact (left) vs. worn Low- 

Force XL Contact (right) tested 

on NiPdAu device 

Oxide Buildup 

The self-cleaning wipe-action of ROL technology is designed 

to greatly reduce the amount of Oxide Buildup on Contacts. 

However, some Oxide Buildup will occur if Contactors are 

unused for 2 or more days, appearing dull gray in color (see 

Figure 9). A light brushing or a few device insertions will 

typically remove the Oxide barrier and expose a shiny surface. 

Clean the Contactor after prolonged downtime or if you experience 

a decrease in yields. Refer to Cleaning Procedures on 

Pages 16-17. 

NOTE: If Contacts have significant/excessive Oxide Build-up, 

check all components in Test Cell to ensure that device alignment 

and plunge depth are correct. 

13 

Figure 9: Example of Oxide 

Buildup on Contact Tip (photo 

is from a test on Matte Tin). 




Pad ROL200 

Series 

Figure 10: Screw Tightening 

Pattern 

Contactor Removal and Installation 

Contactor Removal & Installation Instructions 

It is recommended that you remove your Pad 

ROL200 Series Contactor from the Load Board 

before performing any component inspection, 

cleaning and/or maintenance. 

Step 1— Remove Contactor 

Start removal of the Contactor from the Load Board by loosening 

the fasteners. Use a microscope, to watch for Contacts 

or Ground Insert sticking to the mounting surface while carefully 

lifting Contactor from Load Board. If either is sticking, 

apply several drops of Isopropyl Alcohol through Contact Slots 

and allow it to soak for 2 minutes. Once free, inspect it for 

any loose or missing Contacts. Mount the Contactor to the 

Acrylic Shipping Plate (shown on Page 5). 

Step 2— Perform Maintenance & Cleaning 

Perform the maintenance and cleaning per the instructions 

contained on the following pages. 

Step 3— Clean Load Board 

Before remounting the Contactor to the Load Board, ensure 

that no debris is present in the interface area. If necessary, 

use compressed air and/or Isopropyl Alcohol with a clean 

lint-free cloth to carefully wipe the bottom of the Contactor 

and the surface of the Load Board clean. 

NOTE: NEVER use Acetone or other solvents. 

Recommended 

Torque Values 

in.-lb. Nm 

0-80 1.0 0.11 

2-56 2.0 0.23 

4-40 5.0 0.56 

M1.4 x 0.3 0.4 0.04 

M1.6 x 0.35 0.6 0.06 

M2 x 0.40 1.3 0.15 

M2.5 x 0.45 2.5 0.28 

M3 x 0.5 4.5 0.51 

M4 x 0.7 8.0 0.90 




14 

Step 4— Install Contactor 

Refer to the Load Board Drawing that was sent with either 

your Quote or Order for proper footprint layout. Fasten the 

Contactor to the Load Board by fitting the screws through the 

Contactor Assembly and engaging several threads. Under a 

microscope or 10X Eye Loupe, inspect the Contact tips for 

alignment. Misaligned Contacts can damage the Alignment 

Plate, Housing and Load Board. Use the Elastomer Tool to realign 

the Contacts where necessary. Evenly tighten the fasteners 

in a crisscross pattern. See Figure 10. To avoid damage 

to the Contactor or threaded inserts in the Load Board, the 

Contactor Mounting Screws should be tightened, according to 

the Recommended Torque Values in the table at left. 

Step 5— Verify Contacts 

Verify that all Contacts are properly positioned. 

Gently actuate all of the Contacts with an Elastomer Tool to 

ensure proper Contact motion. 

Step 6— Verify Test Set-up 

Verify the Device-to-Contactor alignment and Handler plunge 

depth, as well as the X-Y presentation.

Contact & Elastomer Removal 

Contact & Elastomer Removal Instructions 

Pad ROL200 

Series 

CAUTION: Avoid putting pressure on Slot Walls and Webs 

by not resting hands or tools in these areas while working 

on the Contactor. See Figures 11 & 12. 

Step 1— Remove Inner/Front Elastomer 

A. Turn Contactor over so Load Board side faces up. 

B. Use a Tweezers to pull out the Inner or Front (gray) 

Elastomer from all four sides of the Contactor. See 

Figure 13. 

C. Inspect Elastomer per instructions on Page 13 to determine 

whether Elastomers can be reused or need to be 

discarded. 

Step 2— Remove Contacts 

A. With Contactor still Load Board side up, use a Tweezers 

to carefully pull Contacts out of Housing. See Figure 14. 

(Many people find it easier to start at one corner and 

work your way around the Contactor, but removal order is 

unimportant.) 

B. Inspect Contacts to determine if they need to be discarded 

or can be reused. Refer to Page 13 for help. 

C. If your intent is just to change out the Elastomers and 

reuse the Contacts, take extra care in the removal process. 

Do not squeeze or bend them and do not touch the 

Tips. Damaged Tips can affect performance. 

D. Either discard worn Contacts or set aside for reassembly. 

Step 3— Remove Outer/Back Elastomer 

Like in Step 1 above, use a Tweezers to pull out the Outer 

or Back (yellow) Elastomer. See Figure 15. Inspect for 

signs of wear per instructions on Page 13 and either set 

aside for reinstallation or discard. 

NOTE: It is recommended to just discard used Elastomers 

and assemble Contactor with new ones, but if they are in 

exceptionally good shape, they can be set aside and reinstalled. 

Blow with Compressed Air before reinstalling. 

Figure 11: 

Figure 12: 

→ 

Slot Walls 

Slot Webbing 

Figure 13: Removal of Inner/ 

Front Elastomer 

→ 

Figure 14: Contact Removal 

→ 

Figure 15: Removal of Outer/ 

Back Elastomer 

15 




Pad ROL200 

Series 

Figure 16: Separating Housing 

and Alignment Plate 

→ 

Contactor Cleaning 

If debris buildup is observable when inspecting 

the Contactor, or you experience a drop in Yields 

or an increase in Resistance, follow the Light 

Cleaning Procedure given here. 

NOTE: A Fiberglass brush is always recommend for Contactor 

cleaning but if you don’t have or are not allowed to use a 

fiberglass brush, a nylon brush may be used a substitute. 

Light Cleaning Procedure 

Step 1— Remove Contactor from Load Board 

Refer to instructions on Page 14, Step 1. 

Step 2— Remove the Alignment Plate 

Use a Scalpel to gently pry apart the Housing and Alignment 

Plate, working in an even and incremental manner around 

the Housing to avoid binding. See Figure 16. 

Figure 17: Correct direction 

for Contact brushing on the 

Top Side of the Contactor 

Figure 18: Correct direction 

for Contact brushing on the 

Bottom Side of the Contactor 

Figure 19: Compressed 

Air Cleaning 


→ 



16 

Step 3— Brush the Top Side of Contactor 

A. Mount Contactor to the Acrylic Mounting Plate. 

B. Use a fiberglass (or nylon) brush to gently clean both 

the Perimeter and Ground (even if in a Ground Insert) 

Contact Tips, brushing from the outside in, toward the 

center of the Contactor. See Figure 17. 

Step 4— Brush the Bottom Side of Contactor 

A. Remove Contactor from the Acrylic Mounting Plate and 

turn over so the Load Board side is up. 

B. Use the fiberglass (or nylon) brush again to gently clean 

both the Perimeter and Ground (even if in a Ground Insert) 

Contact Bottoms. This time brush from the center 

of the Contactor outward. See Figure 18. Avoid brushing 

Elastomers. 

Step 5— Clear the Debris 

Remove any remaining loose debris from the Contactor using 

one or both of these methods: 

· Dry, clean Compressed Air (20psi or less). See Figure 19. 

· A small vacuum 

Be sure to thoroughly cover every part of the Contactor, including 

the Elastomer and Contact Slots. If no loose debris 

remains, the Contactor may be reassembled and reinstalled. 

NOTE: If remaining debris or foreign matter is observed, 

even after performing this Light Cleaning Procedure, try 

the Thorough Cleaning Procedure with an Ultrasonic 

Cleaner per the instructions on the facing page. 

Step 6— Clean the Handler 

Clean the Handler per the manufacturer’s recommendations. 

Step 7— Reinstall the Contactor 

If no loose debris remains on the Contactor, remount it to 

the Load Board per the instructions on Page 14, Step 4.


Thorough Cleaning Procedure 

If the Contactor and Alignment Plate have excessive 

debris buildup, it is strongly recommended 

to perform a thorough cleaning with an Ultrasonic 

Cleaner. Only execute this procedure in a 

well ventilated area with an Exhaust Hood. 

CAUTION: The Ultrasonic Cleaner should have a maximum 

power of 500W and a catch basket in the tank that prevents 

the Contactor from touching settled debris 

Step 1— Prepare the Housing 

A. Remove the Contactor from the Load Board per instructions 

on Page 14, Step 1. 

B. Gently pry apart the Housing and Alignment Plate per 

instructions in Step 2 on the opposite page. 

C. Remove Ground Insert if Contactor has one, Refer to 

ground insert remove instructions on page 27. 

D. If contacts and elastomers require replacement for 

either the housing or Ground Insert, removed the used 

contacts and elastomers 

E. If the contacts and elastomers are in good condition 

they can be left in the housing during the following 

cleaning procedures. 

Pad ROL200 

Series 

Figure 20: Example of Cleaning 

a Housing in an Ultrasonic 

Cleaner; note left position. 

Figure 21: Example of Rinsing 

a Housing in an Ultrasonic 

Cleaner; note right position. 

Step 2— Prepare the Bath 

Prepare a bath of diluted Isopropyl Alcohol (70/30 Alcohol/ 

Water) OR a heated (40-50ºC max) mild acidic (7.1 > ph > 

3.0) solution. 

NOTE: If a Sonic Cleaner is unavailable, gently brush the 

Housing with bath solution (see above), rinse in Deionized 

Water and dry Housing out completely. 

Step 3— Perform the Cleaning 

Operate Ultrasonic Cleaner per Manufacturer’s Instructions only. 

A. Fully immerse the populated or unpopulated housing 

device-side down. The bath should be pre-heated and 

run for a minimum of a 30 minute cycle. See Figure 22. 

B. Also, place the alignment plate and the Ground Insert 

into the bath. 

B. Remove Housing, alignment plate and Ground Insert 

from the bath and sonic rinse and rinse with deionized 

water for about 10 minutes. See Figure 23. 

NOTE: For populated Contactor Housings or Populated 

Ground Inserts, inspect for missing Contacts before 

moving then to the rinse bath. Some Contacts may 

dislodge during the ultrasonic cleaning. Collect them and 

move them to the rinse bath and then reinstall before 

drying. 

17 




Pad ROL200 

Series 


Step 4— Dry the Contactor 

Current leakage may occur during testing if moisture 

remains on the Contacts. To prevent this: 

A. Carefully pat the Contactor dry with a lint-free cloth. 

B. Blow the Contactor dry with heated air. See Figure 22. 

C. If necessary, place in oven for approx. 10 minutes. 

Figure 22: Heated Air Drying— 

a common Hair Dryer will suffice. 

CAUTION: DO NOT use heat guns to blow Contactors dry. 

Heated air should not exceed 100ºC or be utilized for 

longer than 30 minutes. 

Step 5— Reassemble the Contactor 

Reassemble the Contactor per instructions on Pages 18-19. 

Step 6— Reinstall Contactor 

A. Inspect Contactor one final time for any debris, damage 

or moisture. 

B. Remount Contactor to Load Board per instructions on 

Page 14, Step 4. 




18

Elastomer Installation 

Elastomer Installation Instructions 

Before beginning, use low-pressure, clean Compressed 

Air on Contactor to blow away any debris. 

The yellow/gray Elastomers mentioned below refer to the matte 

tin configuration. (The NiPdAu package configuration uses the 

blue/red Elastomer. See Page 4.) 

Step 1— Cut Elastomers to Length 

A. Turn Contactor Load Board side up. 

B. Lay a length of the yellow Elastomer next to the Outer 

or Back Elastomer Slot. (Red Elastomer for the NiPdAu 

configuration) 

C. Use a blade to mark the Elastomer at the correct length 

(see Figure 23), which is just a little short of the End 

Well (see Figure 24). Use care to not cut the Housing. 

D. Use a micro-scissors to cut Elastomer straight across. 

E. Cut remaining 3 lengths of the Outer/Back (yellow) 

Elastomers to this same size. 

F. Proceed on to cut the 4 Inner/Front Elastomers (gray for 

Gold-Plated Contacts; blue for Low-Force XL Contacts) to 

this same length. 

G. Store unused Elastomer in original packaging only. 

Step 2— Install Outer/Back Elastomers 

A. Place a purple Elastomer over the Outer/Back Elastomer Slot. 

B. Using an Elastomer Tool, gently push Elastomer into Slot. 

See Figure 25. Elastomer should extend just slightly less 

than the end of the End Wells. 

C. Continue installing remaining (purple) Outer Elastomers. 

Step 3— Install Inner/Front Elastomers 

A. Place gray Elastomer over the Inner or Front Elastomer 

Slot. (Blue Elastomer for the NiPdAu configuration) 

B. Position a Tweezers over the Contact Rib in the middle of 

the Elastomer Slot, then gently squeeze the Elastomer and 

tuck it into the Elastomer Slot. See Figure 26. Continue 

working towards the right, “pinching and tucking” at each 

rib in sequence. See Figure 27. Use a delicate touch when 

squeezing Elastomer to avoid nicks and cuts. 

C. Once the right side is completed, go back to the center 

and work toward the left. Finish by pushing Elastomer 

Ends into End Wells. Check to make sure Elastomer just 

barely extends into the End Wells (see Figure 24). If 

the Elastomer appears off-center, please pull it out and 

reinstall. Optimum performance is achieved when Elastomers 

are centered in the Elastomer Slot. 

NOTE: Lubricate Elastomers with Isopropyl Alcohol, if 

needed, to facilitate installation. Please use special 

care to avoid bunching, stretching or twisting the 

Elastomer. Proper Elastomer installation helps optimize 

performance. 

D. Continue installing the remaining Inner Elastomers. 

Please note that they will fit more snugly into the Inner 

Elastomer Slots than how it was for the Outer Elastomers. 

19 

Pad ROL200 

Series 

Figure 23: Mark Elastomer at 

appropriate length 

Figure 24: Proper fit of Elastomers 

into End Wells 

Figure 25: Use Elastomer Tool 

to push Elastomer into Outer Slot 

→ 

→ 

→ 

Figure 26: Use Tweezers to 

gently “pinch and tuck” Elastomer 

into Inner Elastomer Slot 

Figure 27: Work from Center 

to Right and then Center to Left 




Pad ROL200 

Series 

→ 

Contact Installation 

Contact Installation Instructions 

CAUTION: Avoid putting pressure on Slot Walls and Webs 

by not resting hands or tools in these areas while working 

on the Contactor. See Figures 11 & 12 on Page 15. 

Figure 28: Align above and 

between Elastomers 

→ 

Step 1— Align and Insert Contact 

A. Turn Contactor Load Board side up. 

B. Using a Tweezers, dip Contact in Isopropyl Alcohol. (The 

alcohol lubricates the Contact, making insertion easier.) 

C. Start installation at the far left Contact Slot on any side. 

Align the Contact above the Contact Slot (see Figure 28) 

and press the Contact down between the gap in the Elastomers 

(see Figure 29). 

Step 2— Position Contact and Insert Further 

Manuever the head of the Contact down and towards the 

center of the Contactor. See Figure 30. 

Figure 29: Insert downward 

into gap between Elastomers 

→ 

Step 3— Final Adjustment 

Use Tweezers to gently rotate the Contact Tail down onto the 

Outer (purple) Elastomer until the fit is snug. See Figure 31. 

Step 4— Installation Pattern 

Continue installing Contacts in the repeating left-right-center 

sequence shown below, per the steps above, until entire side 

is populated. Proceed on to each side in the same manner. 

Figure 30: Gently push 

Contact head towards center of 

Contactor 

→ 

1 8 10 4 12 6 14 3 7 13 5 11 9 2 

Contact Insertion Order 

NOTE: It is recommended to mount the Contactor onto the 

Acrylic Mounting Plate (shown on Page 5) when not in use or 

for inspecting, storing or shipping. If the Contactor is stored 

on Acrylic Mounting Plate for over a week, loosen screws to 

avoid Compression Set on the Rear Elastomer. 

Figure 31: Gently push 

Contact tail down onto purple 

Elastomer 




20

Installation Verification 

In order to ensure optimum performance from your 

Pad ROL200 Series Contactor, it is very important 

to check and make sure that the Contacts and Elastomers 

are properly installed. 

Pad ROL200 

Series 

Turn your Contactor Load Board side up and compare 

to this picture of a properly populated Pad 

ROL200 Contactor: 

RTH Ground Configuration 

Shown 

Former configuration pictured here. 

Purple elastomer has been replaced by 

Yellow elastomer in current configuration. 

Correct/Proper Installation of Contacts/Elastomers 

Check to see that Elastomers are at least halfway 

into the End Wells and that they are not stretched, 

bunched or twisted. This photo is a close-up of the 

corner for a tighter view of the desired Elastomer/ 

End Well relationship. 

Former configuration pictured here. 

Purple elastomer has been replaced by 

Yellow elastomer in current configuration. 

Close-up of Corner, displaying proper Elastomer lengths. 

If your installation does NOT look like these photos, 

please carefully disassemble the Contactor and 

rebuild it again per the directions on Pages 18-19. 

NOTE: A movie showing the Elastomer & Contact Installation 

Process is available for viewing and downloading at our 

website, www.johnstech.com, in the Pad ROL200 Product 

section. 

21 




Pad ROL200 

Series 

Figure 32: RCI Ground Insert 

(New Elastomer retention 

design) 

Grounding Solutions 

The Pad ROL200 Series offers four main 

Grounding Options: 

1] “RCI” — ROL Contacts in a Copper Insert, for 

5x5-12x12 packages 

· New Elastomer retention design - (See Figure 32) 

· Original Snap Fit design - (See Figure 33) 

2] “CI” — a Copper Insert for 3x3 packages (See 

Figure 34); 

3] “EI” — Eco-1 Insert for 3x3 & 4x4 packages 

(See Figure 35) 

(See the EI Insert Owners Manual, Lit 1413A) 

4] “RTH” — ROL Contacts in Torlon Housing, for 

4x4-12x12 packages (refer to page 21) 

In order to maintain proper operation and ensure 

a long life for your Grounding Solution, you will 

need to perform cleaning and maintenance, much 

like you need to do for the other Components of 

your Pad ROL200 Series Contactor. 

Figure 33: RCI Ground Insert 

(Original Snap Fit design) 

Figure 34: CI Ground Insert 

Ground Inserts 

RCI, CI and EI ground inserts need to be removed for cleaning 

and maintenance per the instructions on Page 23. Then follow 

the Cleaning & Installation instructions on Page 23. 

Ground Contact Maintenance 

Inspection, cleaning and change-out of the Ground Contacts 

& Elastomers can be performed in the same manner as the 

Perimeter Contacts and Elastomers. (However, please note that 

depending on which way the ground Contacts are oriented, the 

direction of brushing when performing the Light Cleaning Procedure 

will vary. Refer to Figures 15 & 18 on Page 16 for visual 

cues.) 

Figure 35: EI Ground Insert 

Former configuration pictured in 

Figure 32 and Figure 35. Purple 

elastomer has been replaced 

by Yellow elastomer in current 

configuration. 

22

Ground Insert Maintenance 

Ground Insert Removal Instructions 

IMPORTANT: Use finger cots when handling Ground 

Inserts to avoid contamination with skin oils, which 

can degrade performance. 

Pad ROL200 

Series 

→ 

Using covered fingers and/or the Elastomer Tool, press down 

on the Ground Insert. The Insert will easily release out of the 

Housing. See Figure 36 at right. 

Ground Insert Cleaning Instructions 

Step 1— Remove Contacts & Elastomers 

Once the Ground Insert is removed from the Housing, follow 

instructions for Contact and Elastomer removal on Page 15. 

Figure 36: A light downward 

push will free Ground Insert 

from Housing 

Step 2— Clean Ground Insert 

A. Clean the unpopulated Ground Insert with a fiberglass 

(or nylon) brush per the instructions on Page 16. 

B. Follow up with Ultrasonic Cleaning, per instructions on 

Page 17. 

C. Inspect for mushrooming or bending. If observed, contact 

Johnstech Field Service or your Representative. 

Step 3— Re-assemble Ground Insert 

Follow the instructions for Elastomer & Contact installation 

on Pages 19 & 20. 

Step 4— Blow with Compressed Air 

To clear away any remaining debris, blow the Insert with 

Compressed Air before reinstalling Ground Insert. Inspect for 

remaining debris. If observed, repeat cleaning process again. 

(Refer to Pages 16-17.) 


©2010 ©2009 Johnstech International Corporation 


23

Pad ROL200 

Series 

Elastomer retention 

grooves 

Ledges 

Ground Insert Installation 

New Elastomer Retention Ground Insert Design 

IMPORTANT: Always ensure Ground Insert is clean 

before installing and inspect used inserts for damage 

or wear. 

Step 1— Locate and Position the Ground Insert 

Under magnification locate your Ground Insert and flip the 

insert right side up and lay on a flat surface. 

Figure 37: Position the housing 

over the RCI ground insert. 

Step 2— Installation of the Ground Insert 

With the housing right side up, place the housing over the 

insert to begin the installation. Locate the two grooves on the 

insert (one on either side) to help guide the housing over the 

insert and position the housing over the insert. See Figure 37. 

Line up the ledges from the top of the housing with the 

Elastomer grooves in the Ground Insert. 

NOTE: When the housing and insert are properly oriented, the 

housing will drop completely down flat onto the insert. The top 

of the insert will protrude slightly above the top surface of the 

housing. Do not force the insert and housing together. If the 

housing does not drop completely down onto the insert, the 

parts are not oriented properly. 

Figure 38: Insert the two blue 

retention elastomers. (cutaway 

view) 

Step 3— Install Blue Retention Elastomer 

Insert the two Blue Retention Elastomers (from the top side) 

along the sides of the insert. Cut the Blue Elastomers to the 

correct length, not exceeding the channel opening. 

See Figure 38 & 39. Use the probe tool shown on page 8. 

NOTE: Retention elastomers are installed on the sides of the 

insert. 

Figure 39: Insert the two blue 

retention elastomers. (top view) 

NOTE: Do not confuse the Blue Retention Elastomer with the 

Blue Low-Force XL front Elastomers used in the NiPdAu package 

configuration shown on page 4. The Blue Retention Elastomers are 

significantly smaller in diameter and exhibit a Blue translucent 

color. 

Figure 40: Proper installation of 

Elastomers, Contacts and Insert. 

(bottom view) 




24

Grounding Installation 

Original Snap Fit RCI Ground Insert 

Pad ROL200 

Series 

NOTE: If your Contactor uses the original Snap-fit RCI Ground 

Insert design, please follow these instructions. 

IMPORTANT: Always ensure Ground Insert is clean before 

installing and inspect used Inserts for damage or wear. 

Step 1— Locate Orientation Marks 

With Contactor Load Board side up, locate and align the 

orientation marks on the Ground Insert and Housing. See 

Figure 41. 

NOTE: Some especially small inserts may not have enough 

area available for Orientation Marks. 

Step 2— Install Ground Insert 

Gently press the Ground Insert downward into the Housing 

with uniform force on all sides and making sure the insert 

remains coplanar. The insert should easily press into place. 

See Figure 42. 

NOTE: The Copper Insert for 3x3 devices is a slip-fit. 

Figure 41: Orientation Marks 

→ 

Figure 42: Press Ground 

Insert down to install 

25 




All statements, technical 

information and recommendations 

related to the Seller’s products 

are based on information believed 

to be reliable, but the accuracy 

or completeness thereof is not 

guaranteed. Before utilizing the 

product, the user shall determine 

the suitability of the product 

for its intended use. The user 

assumes all risks and liability 

whatsoever in connection with 

such use. Any statements or 

recommendations of the Seller 

which are not contained in the 

Seller’s current publications shall 

have no force or effect unless 

contained in an agreement signed 

by an authorized officer of the 

Seller. The statements contained 

herein are made in lieu of all 

warranties expressed or implied, 

including but not limited to the 

implied merchantability and 

fitness for a particular purpose 

which warranties are hereby 

expressly disclaimed. Seller shall 

not be liable to the user or any 

other person under any legal 

theory, including but not limited 

to negligence or strict liability, 

for any injury or for any direct or 

consequential damages sustained 

or incurred by reason of the use 

of any of Seller’s products or 

services that were defective. 

Worldwide Headquarters 

1210 New Brighton Boulevard 

Minneapolis, MN 55413-1641 USA 

Tel: 612.378.2020 

Fax: 612.378.2030 

E-mail: info@johnstech.com 


Regional/Field Service Office — California, USA 

2450 Scott Boulevard 

Santa Clara, CA 95050-2504 

Tel: 408.448.2020 

Fax: 408.448.2030 

www.johnstechhelp.com 

Regional/Field Service Office — Singapore 

14 Robinson Road #13-00 

Far East Finance Building 

Singapore 048545 

Tel: 65.6385.2389 

Fax: 65.6323.1839 

I 

© Copyright 2009 Johnstech International 

Corporation Specifications subject to change. 

Specifications subject to change without notice. 

No part of this document may be reproduced 

in any form or by any means, electronic 

or mechanical, including photocopying, 

recording or by any information storage or 

retrieval system, without expressed written 

permission from Johnstech. Johnstech and 

Johnstech logo are registered trademark s 

in the USA and other countries. Johnstech 

products and components are covered by 

patents and copyrights in the USA and other 

countries. 

For questions about anything contained in this 

Maintenance & Inspection Guide, contact your local 

Johnstech representative. 

If you are experiencing a technical problem or issue, 

fill out the online Tech Help Form at: 

www.johnstechhelp.com OR 

contact the nearest Field Service Office. 

China & 

EU RoHS 

Compliant 

LIT 1435E-211 

Printed in the USA on 100% Post-Consumer Recycled Paper made utilizing Wind Power. 

Your Contact For Higher Performance 

ISO 9001:2000 Certified

Maintenance & Inspection - Johnstech

Create successful ePaper yourself

Delete template?

Save as template?